vegetap591 vegetap591

20-07-2021
Mathematics

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Use elimination to solve the system 4x + 7y = –14 and 8x + 5y = 8 for x. Round to the nearest tenth.

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moranf611 moranf611

20-07-2021

Answer:

x = 3.5

y = - 4

Step-by-step explanation:

2(4x + 7y = -14)

8x + 14y = -28

8x + 5y = 8

- (8x + 14y = -28)

--------------------------

- 9y = 36

y = 36/-9

y = - 4

4x + 7y = - 14

4x + 7(- 4) = - 14

4x -28 = - 14

4x = 14

x = 14/4

x = 3.5

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